MICHAEL B. GROSSO M.D.
NPI 1184634503
Pediatrics - Adolescent Medicine in Huntington, NY
About Michael B. Grosso M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL B. GROSSO M.D. (NPI 1184634503) is an individual adolescent medicine provider in Huntington, New York, licensed in New York (151788-1) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Michael B. Grosso M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Michael Grosso reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Huntington, NY 11743
- Reassigned Medicare billing, New York enrollment
- 116 clinicians in this Medicare group
Greenlawn, NY 11740
- Reassigned Medicare billing, New York enrollment
- 67 clinicians in this Medicare group
Great Neck, NY 11021
- Reassigned Medicare billing, New York enrollment
- 9,353 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 16
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Michael Grosso's NPI number?
The NPI number for Michael Grosso is 1184634503. It was assigned to this individual provider in the NPPES registry on August 8, 2006.
Where is Michael Grosso located?
Michael Grosso practices at 241 E Main St, Huntington, NY 11743. The listed phone number is (631) 367-5300.
What is Michael Grosso's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Adolescent Medicine, with taxonomy code 2080A0000X.
Is Michael Grosso enrolled in Medicare?
Yes. Michael Grosso is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Michael Grosso's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Grosso reassigns Medicare benefits to 3 organizations: Huntington Hospital Association (Huntington, NY), Huntington Hospital Dolan Family Health Center (Greenlawn, NY) and North Shore-Lij Medical PC (Great Neck, NY). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Grosso's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Michael Grosso was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.